Neumann KH 750 AES67

In conjunction with the Automatic Monitor Alignment, which is available for Mac and PC, the entire system can be precisely calibrated to suit the room character. This includes the analog monitors connected to it, which can be perfectly adapted to the room by correcting both amplitude and phase via the powerful DSP integrated in the subwoofer.

The newly designed 10” long-throw driver has a strong linear working magnet system with ELFF™ technology (Extremely Linear Force Factor™). As subwoofers are usually placed on the floor, a robust grille protects the driver from accidental damage. The ultra-compact cabinet is a closed design, which ensures the fastest possible transient response.
The two analog XLR inputs are balanced as are the two analog XLR outputs. The 192 kHz / 24-bit digital input can accept AES3 and S/PDIF signals. If no signal is present for more than 90 minutes, the auto bypass function reduces power consumption to 0.3 W.

The KH 750 AES67 can be used in music, broadcast, and post production studios for tracking, mixing, and mastering.

APPLICATIONS:
Bass extension of a stereo monitoring system
Increasing the maximum SPL of the loudspeaker system
Decreasing harmonic and intermodulation distortion of the loudspeaker system
Reproduction of the LFE channel
Reproduction of the “Sub” signal of a bass managed multichannel source
Extension for KH line subwoofer systems
AES67/ST 2110 network integration

 AES67 Audio-over-IP Interface Fully redundant AES67 ST2110 compliant audio network interface; 2 Fast Ethernet 100Base-TX (IEEE 802.3) RJ-45 connectors; Physical redundant network (ST 2022-7)
AES67 Audio-over-IP input word length 24 bits
AES67 Audio-over-IP input sampling rate 44.1 / 48 / 88.2 / 96 kHz
AES67 Audio-over-IP input connection management RAVENNA, NMOS IS-04 (Discovery & Registration) and NMOS IS-05 (Connection Management)
THD+N: analog, digital < -100 dB; < -90 dB
Free field frequency response ±6 dB 16 … 800 Hz
Free field frequency response ±3 dB 18 … 750 Hz
Self-generated noise at 10 cm (with input gain set to 100 dB SPL for 0 dBu) Sine wave output with a THD < 0.5 % at 1 m in half space 95 dB SPL (>70 Hz)
Bass capability: Max. SPL in half space at 3% THD at 1m (averaged between 50 Hz and 100 Hz) 105.0 dB SPL
Analog input(s) 2 x XLR: analog electronically balanced
Analog input impedance >13k Ohms
Max. input level < +24 dBu
Common mode rejection ratio (CMRR) > 56 dB @ 15 kHz
Crosstalk (1 kHz), level matching < -90 dB; ±0.1 dB
Volume control via Neumann.Control software
Volume control range; resolution 0 … -∞ dB; 0.1 dB
Analog dynamic range; THD+N 119 dB(A); <0.003% (-90 dB)
Signal routing modes Right; External Bass Management; 2 x LFE
Analog output(s) 2 x XLR; analog electronically balanced
Input gain control (sensitivity) +2 ... -12 dB
Output level control (output level in 1 m based on 0 dBu input level) 94; 100; 108; 114 dB SPL
Digital input(s) BNC (75 Ω): AES3; S/P-DIF
Digital output(s) BNC (75 Ω): AES3
Digital converter: resolution; design 16 … 24-bit DAC; Δ∑
Digital converter: sampling rate 22.05; 24; 32; 44.1; 48; 64; 88.2; 96; 176.4; 192 kHz
Dynamic range A-D-A >120 dB(A)
Dynamic range D-A >123 dB(A)
Digital sensitivity -18 dBFS = 100 dB SPL at 1 m
Latency 1.5 ms (A-D-A linear phase); 1.2 ms (D-A linear phase)
Delay: User adjustable delay range 0 ... 100 ms and 2 x 0 ... 20.8 ms
Delay: Resolution: time; distance 0.1 ms; 3.44 cm (1 3/8”)
Delay: Max. frames Audio-video synchronisation (lip sync) 2.5 (40 ms) frames; 3 (33 ms) frames
Delay: Time-of-flight maximum distance 2 x 7.16 m (23' 5")
Controller design Digital; active
Crossover frequency 80 Hz
Crossover slope 24 dB/oct; 4th order
Phase 0; 45; 90; 135 und 0/180 deg
Equalization: via Neumann.Control software 8 x full parametric IIR + low / high shelf global balance
FIR phase correction For connected analog loudspeakers: Linear phase (170 Hz ... 16 kHz; +/- 45°)
Protection circuitry Driver (thermo limiter); Electronics (temperature limiter); Amplifier (peak limiter, temperature limiter, temperature protection and overcurrent protection); Power supply (temperature limiter and overcurrent protection)
Infrasonic filter: frequency; slope 17.5 Hz; 12 dB/oct.
Remote control Neumann.Control software via an RJ45 connector carrying standard IP data
Display: On; Normal Operation Green LED
Display: Identification Amber LED
Display: Limit / Clip / Errors / Protection /Boot Mute / Shut Down Mute Red LED
Display: Bass Management on Green LED
Output power woofer amplifier (THD+N with limiter deactivated: 10%) 256 W
Mains Power Supply: input voltage; frequency 100-240V; 50/60 Hz
Power consumption (230 V / 100 V): Standby Power consumption (230 V / 100 V): Idle 18 W
Power consumption (230 V / 100 V): Full output 410 W
In-rush current (Peak) 30 A @230 VAC
Standby Disabled; 90 mins (default); user defined in software
Cabinet material Wood cabinet, aluminum electronics panel
Cabinet surface finish; color (front / back) Painted; metallic anthracite (RAL 7021) / black (RAL 9005)
Operating conditions +10° C to +40° C (+50° F to +104° F); <90% RH, non-condensing
Transport/storage conditions -25° C to +70° C (-13° F to 158° F); <90% RH; non-condensing
Woofer 265 mm (10") with protecting black metal grille
Product dimensions (height x width x depth) 383 x 330 x 383 mm (15 1/8" x 13" x 15 1/8")
External net volume 48.4 liters
Product weight 19.5 kg (43 lbs)